Daniel Bomberg, one of the first printers of judaica and the first of sha"s was Christian.
– Noach MiFrankfurtMay 19 '14 at 20:47

Not sure about page numbers, but the first sefer I found that used Arabic numerals for the date of publication on the title page was printed in 1861. From that point on, writing the date in Arabic numerals becomes widespread, and appears in almost all printings. Source: This book
– ShmuelMay 19 '14 at 20:56

Sefarim published in translation use that language's numbering system. A Tehillim translated in Latin in 1521 by Bomberg uses Latin numerals. It's logical to assume, due to the typesetting process, that printers would use the available letters (Hebrew for Hebrew, Latin for Latin) to number their pages, as switching or adding new ones is more effort. I don't know why this changed in the mid-1800's.
– ShmuelMay 19 '14 at 21:04

Thanks for the comments so far. why the down vote? Should I be more specific about something?
– bondonkMay 19 '14 at 21:42

1 Answer
1

"Up to about 1515 only Hebrew letters were used, but Daniel Bomberg introduced Arabic figures as well. In rare cases the alphabet took the place of numbers (Kol Bo, Rimini, 1525, Rome, 1545). Pagination was introduced later than the signature. No incunabulum appears to have had it. The first to have had numbered folios, though not very consistently so, is Maimonides' Mishneh Torah, printed in Constantinople in 1509." ...
"The Hebrew number appears on the upper left of the first page in Bomberg's works; other printers added Arabic figures."